Microscopic biology -- Bacteria: life as a single cell -- Viruses: invaders of the micro world.
Summary:
"The world is full of tiny viruses and bacteria that can be seen only through a microscope. Some bacteria can be helpful, but others cause diseases such as typhoid fever. Viruses can cause deadly diseases such as COVID-19. Young readers will get all the facts about bacteria and viruses, including their similarities and differences, how they cause infections, and how people can keep dangerous germs from spreading"-- Provided by publisher.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.